Pregnancy and caffeine both are not suitable for each other as caffeine is with birth risks. Caffeine in large quantities needs to be avoided as they may slows down fetus growth. According to one of the source, caffeine during pregnancy must be consumed in less than 200mg in daily routine during pregnancy. One of the main risks which are linked with the consumption of caffeine is miscarriage. It is being considered that risk of miscarriage in those pregnant women is high who consumed caffeine in more than 200mg quantities.